Mercurial > sdl-ios-xcode

comparison touchTest/Iphone Test/touchTestIPhone2/touchTestIPhone/main.c @ 4677:31607094315c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added Iphone project. Iphone multi-touch is now functional.
author jimtla
date Sat, 31 Jul 2010 01:24:50 +0400
parents
children f8431f66613d
comparison
equal deleted inserted replaced
4676:99b4560b7aa1 4677:31607094315c
1 #include <stdio.h>
2 #include <SDL.h>
3 #include <math.h>
4 #include <SDL_touch.h>
5 #include <SDL_gesture.h>
6
7 #define PI 3.1415926535897
8 #define PHI ((sqrt(5)-1)/2)
9 #define WIDTH 640
10 #define HEIGHT 480
11 #define BPP 4
12 #define DEPTH 32
13
14 #define MAXFINGERS 5
15
16 #define DOLLARNPOINTS 64
17 #define DOLLARSIZE 256
18
19 //MUST BE A POWER OF 2!
20 #define EVENT_BUF_SIZE 256
21
22 SDL_Event events[EVENT_BUF_SIZE];
23 int eventWrite;
24
25 int mousx,mousy;
26 int keystat[512];
27 int bstatus;
28
29 int colors[7] = {0xFF,0xFF00,0xFF0000,0xFFFF00,0x00FFFF,0xFF00FF,0xFFFFFF};
30
31 long index2fingerid[MAXFINGERS];
32 int fingersDown;
33
34 typedef struct {
35 float x,y;
36 } Point;
37
38 typedef struct {
39 Point p;
40 float pressure;
41 long id;
42 } Finger;
43
44 typedef struct {
45 Finger f;
46 Point cv;
47 float dtheta,dDist;
48 } TouchPoint;
49
50
51 typedef struct { //dt + s
52 Point d,s; //direction, start
53 int points;
54 } Line;
55
56
57 typedef struct {
58 float length;
59
60 int numPoints;
61 Point p[EVENT_BUF_SIZE]; //To be safe
62 } DollarPath;
63
64 typedef struct {
65 float ang,r;
66 Point p;
67 } Knob;
68
69 Knob knob;
70
71 Finger finger[MAXFINGERS];
72
73
74 DollarPath dollarPath[MAXFINGERS];
75
76 #define MAXTEMPLATES 4
77
78 Point dollarTemplate[MAXTEMPLATES][DOLLARNPOINTS];
79 int numDollarTemplates = 0;
80 #ifdef DRAW_VECTOR_EST
81 Line gestureLine[MAXFINGERS];
82 #endif
83
84 void handler (int sig)
85 {
86 printf ("\exiting...(%d)\n", sig);
87 exit (0);
88 }
89
90 void perror_exit (char *error)
91 {
92 perror (error);
93 handler (9);
94 }
95
96
97 void setpix(SDL_Surface *screen, int x, int y, unsigned int col)
98 {
99 Uint32 *pixmem32;
100 Uint32 colour;
101
102 if((unsigned)x > screen->w) return;
103 if((unsigned)y > screen->h) return;
104
105 pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
106
107 Uint8 r,g,b;
108 float a;
109
110 memcpy(&colour,pixmem32,screen->format->BytesPerPixel);
111
112 SDL_GetRGB(colour,screen->format,&r,&g,&b); //Always returns 0xFFFFFF?
113 //r = 0;g = 0; b = 0;
114 a = (col>>24)&0xFF;
115 if(a == 0) a = 0xFF; //Hack, to make things easier.
116 a /= 0xFF;
117 r = r*(1-a) + ((col>>16)&0xFF)*(a);
118 g = g*(1-a) + ((col>> 8)&0xFF)*(a);
119 b = b*(1-a) + ((col>> 0)&0xFF)*(a);
120 colour = SDL_MapRGB( screen->format,r, g, b);
121
122
123 *pixmem32 = colour;
124 }
125
126 void drawLine(SDL_Surface *screen,int x0,int y0,int x1,int y1,unsigned int col) {
127 float t;
128 for(t=0;t<1;t+=1.f/SDL_max(abs(x0-x1),abs(y0-y1)))
129 setpix(screen,x1+t*(x0-x1),y1+t*(y0-y1),col);
130 }
131 void drawCircle(SDL_Surface* screen,int x,int y,int r,unsigned int c)
132 {
133
134 float a;
135 int tx;
136
137 int ty;
138 float xr;
139 for(ty = -abs(r);ty <= abs(r);ty++) {
140 xr = sqrt(r*r - ty*ty);
141 if(r > 0) { //r > 0 ==> filled circle
142 for(tx=-xr+.5;tx<=xr-.5;tx++) {
143 setpix(screen,x+tx,y+ty,c);
144 }
145 }
146 else {
147 setpix(screen,x-xr+.5,y+ty,c);
148 setpix(screen,x+xr-.5,y+ty,c);
149 }
150 }
151 }
152
153 void drawKnob(SDL_Surface* screen,Knob k) {
154 //printf("Knob: x = %f, y = %f, r = %f, a = %f\n",k.p.x,k.p.y,k.r,k.ang);
155
156 drawCircle(screen,k.p.x*screen->w,k.p.y*screen->h,k.r*screen->w,0xFFFFFF);
157
158 drawCircle(screen,(k.p.x+k.r/2*cos(k.ang))*screen->w,
159 (k.p.y+k.r/2*sin(k.ang))*screen->h,k.r/4*screen->w,0);
160
161 }
162
163 void DrawScreen(SDL_Surface* screen, int h)
164 {
165 int x, y, xm,ym,c;
166 if(SDL_MUSTLOCK(screen))
167 {
168 if(SDL_LockSurface(screen) < 0) return;
169 }
170 for(y = 0; y < screen->h; y++ )
171 {
172 for( x = 0; x < screen->w; x++ )
173 {
174 //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
175 //xm = (x+h)%screen->w;
176 //ym = (y+h)%screen->w;
177 //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
178 //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
179 setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
180 //setpix(screen,x,y,0); //Inefficient, but that's okay...
181 }
182 }
183 drawCircle(screen,mousx,mousy,-30,0xFFFFFF);
184 drawLine(screen,0,0,screen->w,screen->h,0xFFFFFF);
185
186 int i;
187 //draw Touch History
188 TouchPoint gestureLast[MAXFINGERS];
189 //printf("------------------Start History------------------\n");
190 for(i = 0;i < MAXFINGERS;i++) {
191 gestureLast[i].f.id = -1;
192 }
193 int numDownFingers = 0;
194 Point centroid;
195 float gdtheta,gdDist;
196
197
198 for(i = SDL_max(0,eventWrite - EVENT_BUF_SIZE);i < eventWrite;i++) {
199 SDL_Event event = events[i&(EVENT_BUF_SIZE-1)];
200 int age = eventWrite - i - 1;
201 if(event.type == SDL_FINGERMOTION ||
202 event.type == SDL_FINGERDOWN ||
203 event.type == SDL_FINGERUP) {
204 SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
205 //SDL_Finger* inFinger = SDL_GetFinger(inTouch,event.tfinger.fingerId);
206
207 float x = ((float)event.tfinger.x)/inTouch->xres;
208 float y = ((float)event.tfinger.y)/inTouch->yres;
209
210 //draw the touch:
211
212 unsigned int c = colors[event.tfinger.touchId%7];
213 unsigned int col =
214 ((unsigned int)(c*(.1+.85))) |
215 ((unsigned int)((0xFF*(1-((float)age)/EVENT_BUF_SIZE))) & 0xFF)<<24;
216
217 if(event.type == SDL_FINGERMOTION)
218 drawCircle(screen,x*screen->w,y*screen->h,5,col);
219 else if(event.type == SDL_FINGERDOWN)
220 drawCircle(screen,x*screen->w,y*screen->h,-10,col);
221 /*
222 //if there is a centroid, draw it
223 if(numDownFingers > 1) {
224 unsigned int col =
225 ((unsigned int)(0xFFFFFF)) |
226 ((unsigned int)((0xFF*(1-((float)age)/EVENT_BUF_SIZE))) & 0xFF)<<24;
227 drawCircle(screen,centroid.x*screen->w,centroid.y*screen->h,5,col);
228 }
229 */
230 }
231 }
232
233
234 for(i=0;i<MAXFINGERS;i++)
235 if(finger[i].p.x >= 0 && finger[i].p.y >= 0)
236 if(finger[i].pressure > 0)
237 drawCircle(screen,finger[i].p.x*screen->w,finger[i].p.y*screen->h
238 ,20,0xFF*finger[i].pressure);
239 else
240 drawCircle(screen,finger[i].p.x*screen->w,finger[i].p.y*screen->h
241 ,20,0xFF);
242
243
244
245 keystat[32] = 0;
246
247 if(knob.p.x > 0)
248 drawKnob(screen,knob);
249
250 if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
251
252 SDL_Flip(screen);
253 }
254
255 SDL_Surface* initScreen(int width,int height)
256 {
257 return SDL_SetVideoMode(width, height, DEPTH,
258 SDL_HWSURFACE | SDL_RESIZABLE);
259 }
260
261 int main(int argc, char* argv[])
262 {
263 SDL_Surface *screen;
264 SDL_Event event;
265
266 knob.r = .1;
267 knob.ang = 0;
268 TouchPoint gestureLast[MAXFINGERS];
269
270 int h,i;
271
272 memset(keystat,0,512*sizeof(keystat[0]));
273 if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
274
275 if (!(screen = initScreen(WIDTH,HEIGHT)))
276 {
277 SDL_Quit();
278 return 1;
279 }
280
281 while(!keystat[27]) {
282 //Poll SDL
283
284
285 while(SDL_PollEvent(&event))
286 {
287 //Record _all_ events
288 events[eventWrite & (EVENT_BUF_SIZE-1)] = event;
289 eventWrite++;
290
291 switch (event.type)
292 {
293 case SDL_QUIT:
294 keystat[27] = 1;
295 break;
296 case SDL_KEYDOWN:
297 //printf("%i\n",event.key.keysym.sym);
298 keystat[event.key.keysym.sym] = 1;
299 if(event.key.keysym.sym == 32) {
300 SDL_RecordGesture(-1);
301 }
302 else if(event.key.keysym.sym == 115) {
303 SDL_RWops *src;
304 //fp = fopen("gestureSave","w");
305 src = SDL_RWFromFile("gestureSave","w");
306
307 printf("Wrote %i templates\n",SDL_SaveAllDollarTemplates(src));
308 //fclose(fp);
309 SDL_RWclose(src);
310 }
311 else if(event.key.keysym.sym == 108) {
312 SDL_RWops *src;
313 //fp = fopen("gestureSave","r");
314 src = SDL_RWFromFile("gestureSave","r");
315 printf("Loaded: %i\n",SDL_LoadDollarTemplates(-1,src));
316 //fclose(fp);
317 SDL_RWclose(src);
318 }
319
320 //keypress = 1;
321 break;
322 case SDL_KEYUP:
323 //printf("%i\n",event.key.keysym.sym);
324 keystat[event.key.keysym.sym] = 0;
325 //keypress = 1;
326 break;
327 case SDL_VIDEORESIZE:
328 if (!(screen = initScreen(event.resize.w,
329 event.resize.h)))
330 {
331 SDL_Quit();
332 return 1;
333 }
334 break;
335 case SDL_MOUSEMOTION:
336 mousx = event.motion.x;
337 mousy = event.motion.y;
338 break;
339 case SDL_MOUSEBUTTONDOWN:
340 bstatus |= (1<<(event.button.button-1));
341 break;
342 case SDL_MOUSEBUTTONUP:
343 bstatus &= ~(1<<(event.button.button-1));
344 break;
345 case SDL_FINGERMOTION:
346 ;
347 printf("Finger: %li,x: %f, y: %f\n",event.tfinger.fingerId,
348 event.tfinger.x,event.tfinger.y);
349 SDL_Touch* inTouch = SDL_GetTouch(event.tfinger.touchId);
350 //SDL_Finger* inFinger = SDL_GetFinger(inTouch,event.tfinger.fingerId);
351 for(i = 0;i<MAXFINGERS;i++)
352 if(index2fingerid[i] == event.tfinger.fingerId)
353 break;
354 if(i == MAXFINGERS) break;
355 if(inTouch > 0) {
356 finger[i].p.x = ((float)event.tfinger.x)/
357 inTouch->xres;
358 finger[i].p.y = ((float)event.tfinger.y)/
359 inTouch->yres;
360
361 finger[i].pressure =
362 ((float)event.tfinger.pressure)/inTouch->pressureres;
363 /*
364 printf("Finger: %i, Pressure: %f Pressureres: %i\n",
365 event.tfinger.fingerId,
366 finger[i].pressure,
367 inTouch->pressureres);
368 */
369 //printf("Finger: %i, pressure: %f\n",event.tfinger.fingerId,
370 // finger[event.tfinger.fingerId].pressure);
371 }
372
373 break;
374 case SDL_FINGERDOWN:
375 printf("Finger: %li down - x: %f, y: %f\n",event.tfinger.fingerId,
376 event.tfinger.x,event.tfinger.y);
377
378 for(i = 0;i<MAXFINGERS;i++)
379 if(index2fingerid[i] == -1) {
380 index2fingerid[i] = event.tfinger.fingerId;
381 break;
382 }
383 finger[i].p.x = event.tfinger.x;
384 finger[i].p.y = event.tfinger.y;
385 break;
386 case SDL_FINGERUP:
387 printf("Figner: %li up - x: %f, y: %f\n",event.tfinger.fingerId,
388 event.tfinger.x,event.tfinger.y);
389 for(i = 0;i<MAXFINGERS;i++)
390 if(index2fingerid[i] == event.tfinger.fingerId) {
391 index2fingerid[i] = -1;
392 break;
393 }
394 finger[i].p.x = -1;
395 finger[i].p.y = -1;
396 break;
397 case SDL_MULTIGESTURE:
398 knob.p.x = event.mgesture.x;
399 knob.p.y = event.mgesture.y;
400 knob.ang += event.mgesture.dTheta;
401 knob.r += event.mgesture.dDist;
402 break;
403 case SDL_DOLLARGESTURE:
404 printf("Gesture %lu performed, error: %f\n",
405 event.dgesture.gestureId,
406 event.dgesture.error);
407 break;
408 case SDL_DOLLARRECORD:
409 printf("Recorded gesture: %lu\n",event.dgesture.gestureId);
410 break;
411 }
412 }
413 DrawScreen(screen,h);
414 for(i = 0; i < 256; i++)
415 if(keystat[i])
416 printf("Key %i down\n",i);
417 }
418 SDL_Quit();
419
420 return 0;
421 }
422